A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental and constitutive modeling investigations on marble in Jinping Underground Laboratory
AbstractThe Jinping Underground Laboratory is the deepest and largest underground laboratory in the world, with a maximum buried depth of approximately 2400 m. The objective is to study the brittle‐ductile transition of marble through a combination of experimental research and constitutive modeling. Triaxial compression and triaxial cyclic loading tests are initially conducted to explore the accumulation of pre‐peak plastic strain and the deterioration of stiffness of the marble. Then, a specific constitutive model is developed to accurately reflect the pre‐peak plastic hardening and post‐peak strain softening behaviors based on the deformation and failure mechanism of the marble. The incremental constitutive relationship of the proposed model is subsequently derived in detail, and the model parameters are calibrated using data obtained from the test results. Finally, the effectiveness of the proposed model is assessed by comparing its results with the experimental results of the marble. The findings show that the proposed model accurately predicts the behavior of the marble, and its results are in good agreement with the test data.
Highlights Triaxial compression and triaxial cyclic loading tests were conducted on Jinping Underground Laboratory marble at different confining pressures. The dominant mechanism chosen to reflect pre‐peak strain hardening behavior is the equivalent plastic strain. A specific constitutive model has been proposed to capture the brittle‐ductile transition behavior of the Jinping Underground Laboratory marble. By calibrating model parameters, it is possible to obtain the mechanical response of the Jinping Underground Laboratory marble even in the absence of laboratory test data.
Experimental and constitutive modeling investigations on marble in Jinping Underground Laboratory
AbstractThe Jinping Underground Laboratory is the deepest and largest underground laboratory in the world, with a maximum buried depth of approximately 2400 m. The objective is to study the brittle‐ductile transition of marble through a combination of experimental research and constitutive modeling. Triaxial compression and triaxial cyclic loading tests are initially conducted to explore the accumulation of pre‐peak plastic strain and the deterioration of stiffness of the marble. Then, a specific constitutive model is developed to accurately reflect the pre‐peak plastic hardening and post‐peak strain softening behaviors based on the deformation and failure mechanism of the marble. The incremental constitutive relationship of the proposed model is subsequently derived in detail, and the model parameters are calibrated using data obtained from the test results. Finally, the effectiveness of the proposed model is assessed by comparing its results with the experimental results of the marble. The findings show that the proposed model accurately predicts the behavior of the marble, and its results are in good agreement with the test data.
Highlights Triaxial compression and triaxial cyclic loading tests were conducted on Jinping Underground Laboratory marble at different confining pressures. The dominant mechanism chosen to reflect pre‐peak strain hardening behavior is the equivalent plastic strain. A specific constitutive model has been proposed to capture the brittle‐ductile transition behavior of the Jinping Underground Laboratory marble. By calibrating model parameters, it is possible to obtain the mechanical response of the Jinping Underground Laboratory marble even in the absence of laboratory test data.
Experimental and constitutive modeling investigations on marble in Jinping Underground Laboratory
Deep Underground Science and Engineering
Wang, Susheng (author) / Zhang, Qiang (author) / Luo, Hao (author) / Lin, Zhinan (author)
2025-02-22
Article (Journal)
Electronic Resource
English
Experimental investigations on the short- and long-term behaviour of Jinping marble in deep tunnels
| Taylor & Francis Verlag | 2015